void vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
{
   struct pipe_surface *dest_surface = NULL;
   struct pipe_context *pipe = ctx->pipe;
   struct st_framebuffer *stfb = ctx->draw_buffer;
   struct st_renderbuffer *strb = stfb->strb;

   vg_validate_state(ctx);

   /* first finish all pending rendering */
   vgFinish();

   dest_surface = pipe->screen->get_tex_surface(pipe->screen,
                                                stfb->blend_texture_view->texture,
                                                0, 0, 0,
                                                PIPE_BIND_RENDER_TARGET);

   /* flip it, because we want to use it as a sampler */
   util_blit_pixels_tex(ctx->blit,
                        stfb->alpha_mask_view,
                        0, strb->height,
                        strb->width, 0,
                        dest_surface,
                        0, 0,
                        strb->width, strb->height,
                        0.0, PIPE_TEX_MIPFILTER_NEAREST);

   /* make sure it's complete */
   vgFinish();

   if (dest_surface)
      pipe_surface_reference(&dest_surface, NULL);
}
void vg_prepare_blend_surface(struct vg_context *ctx)
{
   struct pipe_surface *dest_surface = NULL;
   struct pipe_context *pipe = ctx->pipe;
   struct pipe_sampler_view *view;
   struct pipe_sampler_view view_templ;
   struct st_framebuffer *stfb = ctx->draw_buffer;
   struct st_renderbuffer *strb = stfb->strb;

   /* first finish all pending rendering */
   vgFinish();

   u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
   view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);

   dest_surface = pipe->screen->get_tex_surface(pipe->screen,
                                                stfb->blend_texture_view->texture,
                                                0, 0, 0,
                                                PIPE_BIND_RENDER_TARGET);
   /* flip it, because we want to use it as a sampler */
   util_blit_pixels_tex(ctx->blit,
                        view,
                        0, strb->height,
                        strb->width, 0,
                        dest_surface,
                        0, 0,
                        strb->width, strb->height,
                        0.0, PIPE_TEX_MIPFILTER_NEAREST);

   if (dest_surface)
      pipe_surface_reference(&dest_surface, NULL);

   /* make sure it's complete */
   vgFinish();

   pipe_sampler_view_reference(&view, NULL);
}
Beispiel #3
0
static void vg_prepare_blend_texture(struct vg_context *ctx,
                                     struct pipe_sampler_view *src)
{
   struct st_framebuffer *stfb = ctx->draw_buffer;
   struct pipe_surface *surf;
   struct pipe_surface surf_tmpl;

   vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);

   memset(&surf_tmpl, 0, sizeof(surf_tmpl));
   u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
                              PIPE_BIND_RENDER_TARGET);
   surf = ctx->pipe->create_surface(ctx->pipe,
                                    stfb->blend_texture_view->texture,
                                    &surf_tmpl);
   if (surf) {
      util_blit_pixels_tex(ctx->blit,
                           src, 0, 0, stfb->width, stfb->height,
                           surf, 0, 0, stfb->width, stfb->height,
                           0.0, PIPE_TEX_MIPFILTER_NEAREST);

      pipe_surface_reference(&surf, NULL);
   }
}
Beispiel #4
0
/**
 * glGetTexImage() helper: decompress a compressed texture by rendering
 * a textured quad.  Store the results in the user's buffer.
 */
static void
decompress_with_blit(struct gl_context * ctx,
                     GLenum format, GLenum type, GLvoid *pixels,
                     struct gl_texture_image *texImage)
{
   struct st_context *st = st_context(ctx);
   struct pipe_context *pipe = st->pipe;
   struct st_texture_image *stImage = st_texture_image(texImage);
   struct st_texture_object *stObj = st_texture_object(texImage->TexObject);
   struct pipe_sampler_view *src_view;
   const GLuint width = texImage->Width;
   const GLuint height = texImage->Height;
   struct pipe_surface *dst_surface;
   struct pipe_resource *dst_texture;
   struct pipe_transfer *tex_xfer;
   unsigned bind = (PIPE_BIND_RENDER_TARGET | /* util_blit may choose to render */
		    PIPE_BIND_TRANSFER_READ);

   /* create temp / dest surface */
   if (!util_create_rgba_surface(pipe, width, height, bind,
                                 &dst_texture, &dst_surface)) {
      _mesa_problem(ctx, "util_create_rgba_surface() failed "
                    "in decompress_with_blit()");
      return;
   }

   /* Disable conditional rendering. */
   if (st->render_condition) {
      pipe->render_condition(pipe, NULL, 0);
   }

   /* Create sampler view that limits fetches to the source mipmap level */
   {
      struct pipe_sampler_view sv_temp;

      u_sampler_view_default_template(&sv_temp, stObj->pt, stObj->pt->format);

      sv_temp.format = util_format_linear(sv_temp.format);
      sv_temp.u.tex.first_level =
      sv_temp.u.tex.last_level = texImage->Level;

      src_view = pipe->create_sampler_view(pipe, stObj->pt, &sv_temp);
      if (!src_view) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
         return;
      }
   }

   /* blit/render/decompress */
   util_blit_pixels_tex(st->blit,
                        src_view,      /* pipe_resource (src) */
                        0, 0,             /* src x0, y0 */
                        width, height,    /* src x1, y1 */
                        dst_surface,      /* pipe_surface (dst) */
                        0, 0,             /* dst x0, y0 */
                        width, height,    /* dst x1, y1 */
                        0.0,              /* z */
                        PIPE_TEX_MIPFILTER_NEAREST);

   /* Restore conditional rendering state. */
   if (st->render_condition) {
      pipe->render_condition(pipe, st->render_condition,
                             st->condition_mode);
   }

   /* map the dst_surface so we can read from it */
   tex_xfer = pipe_get_transfer(pipe,
                                dst_texture, 0, 0,
                                PIPE_TRANSFER_READ,
                                0, 0, width, height);

   pixels = _mesa_map_pbo_dest(ctx, &ctx->Pack, pixels);

   /* copy/pack data into user buffer */
   if (_mesa_format_matches_format_and_type(stImage->base.TexFormat,
                                            format, type,
                                            ctx->Pack.SwapBytes)) {
      /* memcpy */
      const uint bytesPerRow = width * util_format_get_blocksize(stImage->pt->format);
      ubyte *map = pipe_transfer_map(pipe, tex_xfer);
      GLuint row;
      for (row = 0; row < height; row++) {
         GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
                                              height, format, type, row, 0);
         memcpy(dest, map, bytesPerRow);
         map += tex_xfer->stride;
      }
      pipe_transfer_unmap(pipe, tex_xfer);
   }
   else {
      /* format translation via floats */
      GLuint row;
      enum pipe_format pformat = util_format_linear(dst_texture->format);
      GLfloat *rgba;

      rgba = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));
      if (!rgba) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
         goto end;
      }

      for (row = 0; row < height; row++) {
         const GLbitfield transferOps = 0x0; /* bypassed for glGetTexImage() */
         GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
                                              height, format, type, row, 0);

         if (ST_DEBUG & DEBUG_FALLBACK)
            debug_printf("%s: fallback format translation\n", __FUNCTION__);

         /* get float[4] rgba row from surface */
         pipe_get_tile_rgba_format(pipe, tex_xfer, 0, row, width, 1,
                                   pformat, rgba);

         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format,
                                    type, dest, &ctx->Pack, transferOps);
      }

      free(rgba);
   }

end:
   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);

   pipe->transfer_destroy(pipe, tex_xfer);

   /* destroy the temp / dest surface */
   util_destroy_rgba_surface(dst_texture, dst_surface);

   pipe_sampler_view_release(pipe, &src_view);
}